Functional Medicine Nutritionist Nutritionists and Dietitians in Riverside County, CA

Photo of Michelle Missy Porteous, Nutritionist/Dietitian, MS, RD, CDE, CLT
Michelle Missy Porteous
Nutritionist/Dietitian, MS, RD, CDE, CLT
1 Endorsed
Riverside, CA 92505
Have you recently been diagnosed with pre-diabetes, diabetes, high blood pressure or high cholesterol? Or, are you chronically plagued with the pain or discomfort of IBS, Migraines or Fibromyalgia? Has eating, the one thing you always felt you could control, now begun to feel it is controlling you? Missy has helped hundreds of people overcome and reverse health conditions, establish healthy food relationships, get off the dieting roller coaster, and learn how to have an ENJOYABLE lifestyle full of energy.
Have you recently been diagnosed with pre-diabetes, diabetes, high blood pressure or high cholesterol? Or, are you chronically plagued with the pain or discomfort of IBS, Migraines or Fibromyalgia? Has eating, the one thing you always felt you could control, now begun to feel it is controlling you? Missy has helped hundreds of people overcome and reverse health conditions, establish healthy food relationships, get off the dieting roller coaster, and learn how to have an ENJOYABLE lifestyle full of energy.
(951) 379-3204 View (951) 379-3204
Photo of Maria Isabel Ramirez Zamora - Holistika Nutrition and Wellness, Nutritionist/Dietitian, MS, CN, CNSc
Holistika Nutrition and Wellness
Nutritionist/Dietitian, MS, CN, CNSc
Online Only
We follow a non-diet, HAES-aligned, functional medicine approach to address root causes.
At Holistika Nutrition & Wellness, our clinic provides compassionate, evidence-based nutrition care for individuals seeking to understand and heal the root causes of their health concerns. We specialize in supporting women through hormonal changes, PCOS, pregnancy, postpartum recovery, and menopause, as well as adults managing diabetes, high cholesterol, metabolic syndrome, and gut health concerns. Our team of dietitians and nutritionists offers clarity, balance, and sustainable guidance tailored to your unique health journey.
We follow a non-diet, HAES-aligned, functional medicine approach to address root causes.
At Holistika Nutrition & Wellness, our clinic provides compassionate, evidence-based nutrition care for individuals seeking to understand and heal the root causes of their health concerns. We specialize in supporting women through hormonal changes, PCOS, pregnancy, postpartum recovery, and menopause, as well as adults managing diabetes, high cholesterol, metabolic syndrome, and gut health concerns. Our team of dietitians and nutritionists offers clarity, balance, and sustainable guidance tailored to your unique health journey.
(206) 457-1558 View (206) 457-1558
Photo of Mary Ann Kelly - Dietitian of the Desert, Nutritionist/Dietitian, RD, CIC, ISAK
Dietitian of the Desert
Nutritionist/Dietitian, RD, CIC, ISAK
1 Endorsed
Serves Area
Every person is unique and my goal is to support your personal health & performance goals with a customized plan. Sessions can be scheduled in person or remotely. I believe in Testing, Not Guessing! Micro-nutrient Levels, Microbiome Test or our Food & Chemical Sensitivity Testing can be completed when local or when on the move. Onsite services also include Body Composition & Metabolic Testing, workshops & seminars and camp support! NEW! Respiratory Training will help you achieve your personal best at altitude or in the gym!. Personalized Probiotics and Supplement Recommendations to match your body type and goals!
Every person is unique and my goal is to support your personal health & performance goals with a customized plan. Sessions can be scheduled in person or remotely. I believe in Testing, Not Guessing! Micro-nutrient Levels, Microbiome Test or our Food & Chemical Sensitivity Testing can be completed when local or when on the move. Onsite services also include Body Composition & Metabolic Testing, workshops & seminars and camp support! NEW! Respiratory Training will help you achieve your personal best at altitude or in the gym!. Personalized Probiotics and Supplement Recommendations to match your body type and goals!
(760) 878-5181 View (760) 878-5181
Photo of Gwendolyn Moore Mph Rd - Nutrition by Gwen Consulting, Nutritionist/Dietitian, MPH, RD, CLT
Nutrition by Gwen Consulting
Nutritionist/Dietitian, MPH, RD, CLT
1 Endorsed
Serves Area
Also specializing in weight loss, diabetes management, alternative & functional nutrition with a Food as Medicine approach.
I specialize in LEAP [Lifestyle, Eating & Performance] Therapy, Food sensitivity and toxic immune food reactions. Through Mediator Release testing (MRT) the residual effects of food are identified (no more guessing) and quantified according to the inflammation load. Lastly, a customized food plan is prepared.
Also specializing in weight loss, diabetes management, alternative & functional nutrition with a Food as Medicine approach.
I specialize in LEAP [Lifestyle, Eating & Performance] Therapy, Food sensitivity and toxic immune food reactions. Through Mediator Release testing (MRT) the residual effects of food are identified (no more guessing) and quantified according to the inflammation load. Lastly, a customized food plan is prepared.
(714) 643-8757 View (714) 643-8757
Photo of Joanna Gallo Avery, Nutritionist/Dietitian, MS, RDN, CDCES
Joanna Gallo Avery
Nutritionist/Dietitian, MS, RDN, CDCES
1 Endorsed
Online Only
Using a functional medicine and nutrition approach, I create personalized plans that restore balance, improve energy, and support lasting wellness—from preconception to postpartum.
My ideal client is a woman who’s ready to understand her body on a deeper level. She may be struggling with hormonal changes, fertility challenges, postpartum recovery, digestive issues, or blood sugar imbalance. She wants to feel energized, balanced, and confident again—but is overwhelmed by conflicting advice. She’s looking for compassionate, science-based guidance to finally get to the root of what’s going on and feel like herself again.
Using a functional medicine and nutrition approach, I create personalized plans that restore balance, improve energy, and support lasting wellness—from preconception to postpartum.
My ideal client is a woman who’s ready to understand her body on a deeper level. She may be struggling with hormonal changes, fertility challenges, postpartum recovery, digestive issues, or blood sugar imbalance. She wants to feel energized, balanced, and confident again—but is overwhelmed by conflicting advice. She’s looking for compassionate, science-based guidance to finally get to the root of what’s going on and feel like herself again.
(425) 371-5542 View (425) 371-5542

Online Dietitians and Nutritionists

Photo of Lauren Bartell Weiss - Lauren Weiss Ph.D.- La Jolla Nutritional Health, Nutritionist/Dietitian, PhD, MEd, CNS-S, CKNS, MHP
Lauren Weiss Ph.D.- La Jolla Nutritional Health
Nutritionist/Dietitian, PhD, MEd, CNS-S, CKNS, MHP
1 Endorsed
Online Only
I offer online Ketogenic Diet consultations and coaching for weight loss, metabolic health, menopause, GLP-1 transition, mental health, cancer, and more. My personalized programs are comprised of education, behavior modification, and daily on-going support and encouragement. The Ketogenic Lifestyle is the best and most effective approach for optimizing metabolic health which is critical for disease prevention, overall health, and weight loss.
I offer online Ketogenic Diet consultations and coaching for weight loss, metabolic health, menopause, GLP-1 transition, mental health, cancer, and more. My personalized programs are comprised of education, behavior modification, and daily on-going support and encouragement. The Ketogenic Lifestyle is the best and most effective approach for optimizing metabolic health which is critical for disease prevention, overall health, and weight loss.
(858) 260-2421 View (858) 260-2421
Photo of Alyson Roux, Nutritionist/Dietitian, MS, CNS, LDN
Alyson Roux
Nutritionist/Dietitian, MS, CNS, LDN
Online Only
You have spent so much time trying to eat perfectly that food has become exhausting. You want peace with eating and confidence in your body again. I help people who feel burned out from diets or stress find simple, sustainable ways to nourish themselves. Alongside my client work, I teach postgraduate nutrition students how to blend science, compassion, and trauma informed care.
You have spent so much time trying to eat perfectly that food has become exhausting. You want peace with eating and confidence in your body again. I help people who feel burned out from diets or stress find simple, sustainable ways to nourish themselves. Alongside my client work, I teach postgraduate nutrition students how to blend science, compassion, and trauma informed care.
(224) 218-5455 View (224) 218-5455
Photo of Sheri Lee Weitz, Nutritionist/Dietitian, RDN, CDCES
Sheri Lee Weitz
Nutritionist/Dietitian, RDN, CDCES
Los Angeles, CA 90045
Are you confused about what to eat? Are you looking to keep muscle while on a GLP-1? . Are you diabetic or trying to prevent diabetes or other chronic diseases? Do you suffer with food allergies or sensitivities? Do you display disordered eating, or eating disorder behaviors? Let's form a "team" to help improve your labs, lose or gain weight, and make lasting changes without feeling deprived. I currently work in doctors' offices and hospitals, keeping up-to-date on the latest research. I also accept most Insurance, and Medicare. If you need to pay out of pocket, I will work with your budget. It's time to "Move to Wellness!"
Are you confused about what to eat? Are you looking to keep muscle while on a GLP-1? . Are you diabetic or trying to prevent diabetes or other chronic diseases? Do you suffer with food allergies or sensitivities? Do you display disordered eating, or eating disorder behaviors? Let's form a "team" to help improve your labs, lose or gain weight, and make lasting changes without feeling deprived. I currently work in doctors' offices and hospitals, keeping up-to-date on the latest research. I also accept most Insurance, and Medicare. If you need to pay out of pocket, I will work with your budget. It's time to "Move to Wellness!"
(424) 320-6194 View (424) 320-6194
Photo of Tami Broderick, Nutritionist/Dietitian, RD, CLT
Tami Broderick
Nutritionist/Dietitian, RD, CLT
1 Endorsed
Irvine, CA 92614
As a compassionate Dietitian with 17 years of experience specializing in functional nutrition, I'm dedicated to helping you discover the root causes of your health challenges.
Genetics: I use cutting-edge DNA testing to personalize nutrition plans and optimize health outcomes with customized dietary strategies tailored to each individual's unique needs. Food Sensitivities: I utilize Leap MRT food sensitivity testing that enables the identification of specific food triggers that may be contributing to health issues and inflammation
As a compassionate Dietitian with 17 years of experience specializing in functional nutrition, I'm dedicated to helping you discover the root causes of your health challenges.
Genetics: I use cutting-edge DNA testing to personalize nutrition plans and optimize health outcomes with customized dietary strategies tailored to each individual's unique needs. Food Sensitivities: I utilize Leap MRT food sensitivity testing that enables the identification of specific food triggers that may be contributing to health issues and inflammation
(949) 281-7497 View (949) 281-7497
Photo of Carly Marenna - June Nutrition Therapy, Nutritionist/Dietitian, MHA, RD-N
June Nutrition Therapy
Nutritionist/Dietitian, MHA, RD-N
Online Only
My ideal clients are women, teens, and young adults looking for a more peaceful, supported relationship with food, body, and health. Many come to June Nutrition Therapy seeking guidance through fertility, pregnancy, postpartum recovery, breastfeeding, blood sugar concerns, eating disorder recovery, body image struggles, or chronic stress around food and wellness. Often, clients feel overwhelmed by conflicting nutrition advice, disconnected from their body, exhausted from dieting or anxiety around food, or simply unsure how to nourish themselves well during an important season of life.
My ideal clients are women, teens, and young adults looking for a more peaceful, supported relationship with food, body, and health. Many come to June Nutrition Therapy seeking guidance through fertility, pregnancy, postpartum recovery, breastfeeding, blood sugar concerns, eating disorder recovery, body image struggles, or chronic stress around food and wellness. Often, clients feel overwhelmed by conflicting nutrition advice, disconnected from their body, exhausted from dieting or anxiety around food, or simply unsure how to nourish themselves well during an important season of life.
(562) 262-8714 View (562) 262-8714
Photo of Seema Shah, Nutritionist/Dietitian, MPH, MS, RD, IFNCP, WIMI-CP
Seema Shah
Nutritionist/Dietitian, MPH, MS, RD, IFNCP, WIMI-CP
Online Only
I utilize integrative and functional nutrition, lifestyle interventions, and health coaching to help my clients achieve their health goals.
I specialize in helping people who have type 2 diabetes or prediabetes, high cholesterol, high blood pressure, hypothyroidism, chronic stress and/or insomnia, anxiety, fatigue, perimenopause, PMS and/or painful periods, chronic stress. and high inflammation. I also help people with meeting their weight goals.
I utilize integrative and functional nutrition, lifestyle interventions, and health coaching to help my clients achieve their health goals.
I specialize in helping people who have type 2 diabetes or prediabetes, high cholesterol, high blood pressure, hypothyroidism, chronic stress and/or insomnia, anxiety, fatigue, perimenopause, PMS and/or painful periods, chronic stress. and high inflammation. I also help people with meeting their weight goals.
(310) 494-7016 View (310) 494-7016
Photo of Naria Le Mire - Naria Le Mire Nutrition - Virtual Practice, Nutritionist/Dietitian, MPH, RD
Naria Le Mire Nutrition - Virtual Practice
Nutritionist/Dietitian, MPH, RD
Online Only
I practice functional medicine and send functional test to get to the root problem of the gut health pains.
Dealing with bloating, flare-ups, reflux, and unable to add certain foods without discomfort? You came to the right dietitian! I work with patients who are dealing with unresolved digestive issues as start by testing their gut micorbiome to avoid guessing the diet and supplement plan. I'm also bilingual (Spanish). Contact me today for a FREE discovery call to learn how my 3-step gut restoration process can help you!
I practice functional medicine and send functional test to get to the root problem of the gut health pains.
Dealing with bloating, flare-ups, reflux, and unable to add certain foods without discomfort? You came to the right dietitian! I work with patients who are dealing with unresolved digestive issues as start by testing their gut micorbiome to avoid guessing the diet and supplement plan. I'm also bilingual (Spanish). Contact me today for a FREE discovery call to learn how my 3-step gut restoration process can help you!
(619) 329-8251 View (619) 329-8251
Photo of Jocelyn Harrison, Nutritionist/Dietitian, MPH, RDN
Jocelyn Harrison
Nutritionist/Dietitian, MPH, RDN
1 Endorsed
Online Only
Food, a critical component of health, has the power to heal. I take a holistic approach using the healing power of food and simple lifestyle adjustments to address your health issues at their root cause. We start with a full dietary, medical, and lifestyle assessment to better understand your unique situation, genetics, and health goals. Then, together, you and I will create a personalized, science-based nutrition program designed to address your health conditions and provide you with overall optimum health. You deserve to live a full and vibrant life.
Food, a critical component of health, has the power to heal. I take a holistic approach using the healing power of food and simple lifestyle adjustments to address your health issues at their root cause. We start with a full dietary, medical, and lifestyle assessment to better understand your unique situation, genetics, and health goals. Then, together, you and I will create a personalized, science-based nutrition program designed to address your health conditions and provide you with overall optimum health. You deserve to live a full and vibrant life.
(323) 613-3980 View (323) 613-3980
Photo of Amanda Wikan, Nutritionist/Dietitian, MS, RDN
Amanda Wikan
Nutritionist/Dietitian, MS, RDN
Los Angeles, CA 90049
As a Registered Dietitian with a Master's in Nutrition & Functional Medicine, I look beyond food choices to assess digestion, nutrient status, and the microbiome.
My clients typically come to me with some combination of bloating, cramping, urgency, constipation, or diarrhea that hasn't resolved despite consistent effort, and confusion or fear around food after years of conflicting advice. Often, they've seen gastroenterologists and multiple providers without getting a clear answer.
As a Registered Dietitian with a Master's in Nutrition & Functional Medicine, I look beyond food choices to assess digestion, nutrient status, and the microbiome.
My clients typically come to me with some combination of bloating, cramping, urgency, constipation, or diarrhea that hasn't resolved despite consistent effort, and confusion or fear around food after years of conflicting advice. Often, they've seen gastroenterologists and multiple providers without getting a clear answer.
(707) 868-5718 View (707) 868-5718
Photo of Sarah Marie Jackson, Nutritionist/Dietitian, MS, RDN, CLT
Sarah Marie Jackson
Nutritionist/Dietitian, MS, RDN, CLT
Irvine, CA 92620
Wellness is multifaceted- I'm certified in functional nutrition to help you get to the root cause of your symptoms and provide comprehensive treatment solutions.
I help clients achieve their nutrition related health goals by coupling evidenced based practices with function nutrition therapies. I find the root cause of my clients health concerns then develop a personalized nutrition plan that is easy to follow so goals can be achieved.
Wellness is multifaceted- I'm certified in functional nutrition to help you get to the root cause of your symptoms and provide comprehensive treatment solutions.
I help clients achieve their nutrition related health goals by coupling evidenced based practices with function nutrition therapies. I find the root cause of my clients health concerns then develop a personalized nutrition plan that is easy to follow so goals can be achieved.
(747) 271-2024 View (747) 271-2024
Photo of Ayumi Mizumoto - Sungreen Nutrition International, Nutritionist/Dietitian, MS
Sungreen Nutrition International
Nutritionist/Dietitian, MS
Online Only
When was the last time you truly felt like "YOU?" Are you suffering from chronic conditions like High BP, Cholesterol, GERD, Diabetes, Insomnia, burned out, no energy, Constipation, Bloating etc. Do you want long lasting relief through natural diet and lifestyle modifications? ​​
When was the last time you truly felt like "YOU?" Are you suffering from chronic conditions like High BP, Cholesterol, GERD, Diabetes, Insomnia, burned out, no energy, Constipation, Bloating etc. Do you want long lasting relief through natural diet and lifestyle modifications? ​​
(858) 360-1525 View (858) 360-1525
Photo of Tara Durden - Nutrition Thyme , Nutritionist/Dietitian, MS, RDN
Nutrition Thyme
Nutritionist/Dietitian, MS, RDN
2 Endorsed
Huntington Beach, CA 92649
We are a functional nutrition practice providing personalized nutrition care that empowers clients to improve their health through a functional, sustainable, & client-driven approach.
Our areas of expertise include Preventative Nutrition, Weight Management, Pre-Diabetes & Diabetes Management, PCOS, Hormone Health, GI Disorders, Bariatrics, Kidney Disease, Thyroid Disorders, Pediatrics + Feeding Concerns, Eating Disorders, Intuitive Eating, Supplement Management and Lab Testing & Analysis.
We are a functional nutrition practice providing personalized nutrition care that empowers clients to improve their health through a functional, sustainable, & client-driven approach.
Our areas of expertise include Preventative Nutrition, Weight Management, Pre-Diabetes & Diabetes Management, PCOS, Hormone Health, GI Disorders, Bariatrics, Kidney Disease, Thyroid Disorders, Pediatrics + Feeding Concerns, Eating Disorders, Intuitive Eating, Supplement Management and Lab Testing & Analysis.
(562) 414-5539 View (562) 414-5539
Photo of Kelli Foerster, Nutritionist/Dietitian, MS, CNS, CPT
Kelli Foerster
Nutritionist/Dietitian, MS, CNS, CPT
Online Only
I utilize an integrative approach, combining functional medicine, sports nutrition, behavior change, and intuitive eating.
Hey! I'm Kelli, let's build the ideal strategy for your health and your goals. I help people use diet, exercise, and mindset to improve energy, lose weight, build muscle, and improve health. I know it can be overwhelming, let me help you make it simple AND effective :)
I utilize an integrative approach, combining functional medicine, sports nutrition, behavior change, and intuitive eating.
Hey! I'm Kelli, let's build the ideal strategy for your health and your goals. I help people use diet, exercise, and mindset to improve energy, lose weight, build muscle, and improve health. I know it can be overwhelming, let me help you make it simple AND effective :)
(818) 600-9625 View (818) 600-9625
Photo of Nadia Pugh, Nutritionist/Dietitian, MS, RDN, LDN
Nadia Pugh
Nutritionist/Dietitian, MS, RDN, LDN
4 Endorsed
San Diego, CA 92116
Nadia is passionate about women’s health, PCOS, fertility, thyroid and autoimmune disorders, renal health, and diabetes management. Her holistic approach focuses on individualized nutrition plans that cater to your unique needs and goals. She emphasizes that there’s no one-size-fits-all diet and aims to empower you with healthy eating habits that resonate with your preferences. Whether you’re addressing imbalances, seeking better habits, or enhancing your relationship with food, Nadia is committed to providing personalized support and practical advice for lasting well-being.
Nadia is passionate about women’s health, PCOS, fertility, thyroid and autoimmune disorders, renal health, and diabetes management. Her holistic approach focuses on individualized nutrition plans that cater to your unique needs and goals. She emphasizes that there’s no one-size-fits-all diet and aims to empower you with healthy eating habits that resonate with your preferences. Whether you’re addressing imbalances, seeking better habits, or enhancing your relationship with food, Nadia is committed to providing personalized support and practical advice for lasting well-being.
(904) 567-0490 View (904) 567-0490
Photo of Dr. Leandro Pucci, Nutritionist/Dietitian, DCN, CNS, CKNS, LDN
Dr. Leandro Pucci
Nutritionist/Dietitian, DCN, CNS, CKNS, LDN
3 Endorsed
Online Only
Do you want to improve your cardiometabolic health, manage weight, blood sugar, cholesterol, gut health, or inflammation? Struggling with mood issues? Using GLP-1 therapies (Ozempic, Mounjaro)? Are you experiencing hormone imbalances or performance issues? Curious about keto? I specialize in uncovering root causes and creating personalized, evidence-based nutrition and lifestyle plans. My approach uses Medical Nutrition Therapy to address your unique needs, not just symptoms. Let me help you achieve your health goals with a sustainable, personalized plan tailored to your concerns and health goals.
Do you want to improve your cardiometabolic health, manage weight, blood sugar, cholesterol, gut health, or inflammation? Struggling with mood issues? Using GLP-1 therapies (Ozempic, Mounjaro)? Are you experiencing hormone imbalances or performance issues? Curious about keto? I specialize in uncovering root causes and creating personalized, evidence-based nutrition and lifestyle plans. My approach uses Medical Nutrition Therapy to address your unique needs, not just symptoms. Let me help you achieve your health goals with a sustainable, personalized plan tailored to your concerns and health goals.
(323) 616-1605 View (323) 616-1605